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首页> 外文期刊>Revista Brasileira de Educacao Fisica e Esporte >Avalia??o do torque passivo de flex?o plantar e torque ativo de flex?o dorsal em ginastas rítmicas e n?o atletas
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Avalia??o do torque passivo de flex?o plantar e torque ativo de flex?o dorsal em ginastas rítmicas e n?o atletas

机译：艺术体操运动员和非运动员足底屈曲被动扭矩和背屈主动扭矩的评估

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The training performed by elite athletes leads to specific functional demands, producing changes on tendon and muscle properties. In the rhythmic gymnastics (RG) athletes there is a higher motor control demand in extreme plantarflexed positions. This functional demand can change the passive torque produced by the plantarflexors, as well as influence the dorsiflexion range of motion (ROM) and maximal dorsiflexion torque. We compared the dorsiflexor ROM and the influence of the passive plantarflexion torque (PPT) on the active dorsiflexion torque (ADT) between RG and nonathletes (NA) girls. The study included 10 RG and 10 NA. The dorsiflexor ROM was measured with a goniometer. The PPT and ADT were evaluated through isokinetic dynamometry at five ankle joint angles (20o, 10o, 0o, -10o, -20o). Independent T test was used to comparison between groups (α = 0.05). Pearson correlation coefficients indicated a high and moderate negative correlation between PPT and ADT for RG and NA, respectively. RG had a smaller dorsiflexion ROM than NA. The PPT was significantly higher in RG compared NA. In contrast, the ADT was higher in NA. The PPT correlation to ADT was r = -0.82; p < 0.01 and r = -0.68; p < 0.01, for RG and NA, respectively. Results suggest that higher mechanical loading on plantarflexors in the RG increase the PPT that influence negatively in the dorsiflexor ROM and ADT.
机译：精英运动员进行的训练会导致特定的功能需求，从而导致肌腱和肌肉特性发生变化。在艺术体操（RG）运动员中，极端屈足姿势对运动控制的要求更高。该功能需求可以改变由flex屈产生的被动扭矩，以及影响运动的背屈范围（ROM）和最大背屈扭矩。我们比较了背屈ROM和RG和非运动员（NA）女孩之间的被动plant屈扭矩（PPT）对主动背屈扭矩（ADT）的影响。该研究包括10 RG和10 NA。用测角计测量背屈ROM。通过等速测力法在五个踝关节角度（20o，10o，0o，-10o，-20o）评估PPT和ADT。独立的T检验用于组间比较（α= 0.05）。皮尔逊相关系数表明RG和NA的PPT和ADT之间分别有较高和中等的负相关。 RG的背屈ROM小于NA。与NA相比，RG的PPT明显更高。相反，NA的ADT较高。 PPT与ADT的相关性为r = -0.82; p <0.01且r = -0.68;对于RG和NA，p <0.01。结果表明，RG足底屈肌上较高的机械负荷会增加PPT，对背屈ROM和ADT产生负面影响。

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